Reflection Chen

This is my refelction about what i learned,the difficults and so on in physic classes. 

what i learned about...

I learned how to solve projectile problems. the horizontal speed of an object it's always constant. Also when it reaches the maxium height, the vertical speed is always 0.I also learned how the wind effect the direction and speed of the airplan, boat and something else. We can use equation to solve these kind of questions Vpg=Vpt+Vtg.

obstacles i encountered...

I find some difficults when i doing vector kinematics. Sometimes i am not sure which direction should the graph be. But then i understand that when a object moving west when we are moving north, we see the object moving south west. It's just like when we stay in a moving car, we see the things go backwards.

My problem solving skills...

I'm good at sloving projectile problems,they are easy for me, but sometimes i will make some small mistakes...My weakness is to make sure the direction of the object athough it's not a problem for me now, but i also need some time to think.